CN211697564U - Optical filter detection device - Google Patents
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- CN211697564U CN211697564U CN201922340444.0U CN201922340444U CN211697564U CN 211697564 U CN211697564 U CN 211697564U CN 201922340444 U CN201922340444 U CN 201922340444U CN 211697564 U CN211697564 U CN 211697564U
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Abstract
The utility model provides a light filter check out test set relates to the light filter and detects technical field, the utility model provides a light filter check out test set, include: the optical filter detection device comprises a first detection assembly and a second detection assembly, wherein the first detection assembly is used for detecting the defect information of the detected optical filter, the second detection assembly is used for detecting the distance between the first detection assembly and the detected optical filter, and the optical filter detection device is configured to adjust the first detection assembly according to the distance between the first detection assembly and the detected optical filter. The utility model provides a light filter check out test set can alleviate the technical problem that light filter warpage influences and detects the accuracy among the prior art.
Description
Technical Field
The utility model belongs to the technical field of the light filter detects technique and specifically relates to a light filter check out test set is related to.
Background
Most of the optical filter detection adopts a mode of visual inspection by human eyes, so that the detection precision is low, and the problems of detection omission and low detection efficiency exist. When appearance defects are detected, detection personnel need to manually mark the positions of the defects, the consistency of manual marking is poor, and time is consumed. In addition, in the process of detecting the optical filters by means of the lens, because each optical filter has warpage of different degrees, the warped part generates defocusing, and therefore imaging ghost images occur, and detection accuracy is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a light filter check out test set to alleviate the technical problem that light filter warpage influences the detection accuracy among the prior art.
In a first aspect, the utility model provides an optical filter check out test set, include: a first detection assembly and a second detection assembly; the first detection assembly is used for detecting the defect information of the detected optical filter; the second detection assembly is used for detecting the distance between the first detection assembly and the detected optical filter; the filter detection device is configured to adjust the first detection assembly according to the distance between the first detection assembly and the detected filter.
In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the optical filter detection apparatus further includes a detection platform, the detection platform is provided with a carrying surface to carry the detected optical filter.
In combination with the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the optical filter detection apparatus further includes a position adjustment component, the position adjustment component is connected to the detection platform or the first detection component, so as to adjust the detection position of the first detection component relative to the detected optical filter.
In combination with the second possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the position adjustment assembly includes a second driving member, and the second driving member is connected to the detection platform or the first detection assembly to drive the first detection assembly to reciprocate along a first direction parallel to the bearing surface relative to the inspected optical filter.
With reference to the third possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the position adjustment assembly further includes a third driving element, and the third driving element is connected to the detection platform or the first detection assembly to drive the first detection assembly to move reciprocally relative to the optical filter to be detected along a second direction parallel to the bearing surface; the second direction has an included angle with the first direction.
In combination with the first possible implementation manner of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the detection platform is provided with a through groove, and the detected optical filter covers the through groove in a state that the detection platform bears the detected optical filter; one side of the detection platform, which deviates from the first detection assembly, is provided with a first light source, and the first light source is used for irradiating the detected optical filter.
With reference to the first possible implementation manner of the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein a second light source is disposed between the detection platform and the first detection assembly.
With reference to the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the first detection component includes: the visual detection device and a first driving piece connected with the visual detection device; the first driving piece is connected with the controller and used for adjusting the distance between the visual detection device and the detected optical filter.
In combination with the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the second detection component includes a distance measurement sensor.
In combination with the first aspect, the present invention provides a ninth possible implementation manner of the first aspect, wherein the optical filter detection apparatus further includes: the marking device and the marking driving device are connected with the marking device; the marking driving device is used for driving the marking device to mark defects on the measured optical filter.
The embodiment of the utility model provides a following beneficial effect has been brought: the defect information of the detected optical filter is detected through the first detection assembly, the distance between the first detection assembly and the detected optical filter is detected through the second detection assembly, and the optical filter detection equipment adjusts the first detection assembly according to the distance between the first detection assembly and the detected optical filter, so that the technical problem of inaccurate detection caused by warping of the detected optical filter can be solved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of an optical filter detection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a first detection assembly, a second detection assembly, a controller, a position adjustment assembly, and a mark driving device of the optical filter detection apparatus provided in an embodiment of the present invention;
fig. 3 is a schematic diagram of a position adjustment assembly of an optical filter detection apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a mark driving device of an optical filter detection apparatus according to an embodiment of the present invention.
Icon: 100-a first detection assembly; 110-a visual inspection device; 120-a first drive member; 200-a second detection assembly; 300-a controller; 400-detection platform; 401-through slots; 500-a position adjustment assembly; 510-a second driver; 520-a third driver; 600-a first light source; 700-a second light source; 701-light passing area; 800-marking the device; 900 — mark drive device.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1 and fig. 2, the embodiment of the present invention provides an optical filter detection apparatus, including: a first sensing assembly 100 and a second sensing assembly 200; the first detection assembly 100 is used for detecting defect information of the filter to be detected; the second detection assembly 200 is used for detecting the distance between the first detection assembly 100 and the measured optical filter; the filter detection apparatus is configured to adjust the first detection assembly 100 according to the distance between the first detection assembly 100 and the filter to be detected. Wherein, the first detection assembly 100 includes: the camera and the zoom lens are respectively connected with the controller 300, and the camera can acquire clear images of the measured optical filter by adjusting the focal positions of the camera and the zoom lens.
In some embodiments, the second detecting element 200 employs a distance measuring sensor connected to the first detecting element 100, and the distance measuring sensor detects the distance between the first detecting element 100 and the measured optical filter by using a laser distance measuring or ultrasonic distance measuring method.
In this embodiment, the second detecting component 200 employs a laser displacement sensor, an optical axis of the laser displacement sensor is parallel to an optical axis of the first detecting component 100, and the warp information of the detected optical filter is detected by the laser displacement sensor, so that the distance between the first detecting component 100 and each position on the detected optical filter can be obtained, or the distance between a reference plane perpendicular to the optical axis of the first detecting component 100 and each position on the detected optical filter can be obtained, and the first detecting component 100 is adjusted to focus on the detected optical filter.
In one embodiment, the second detecting element 200 and the first detecting element 100 are respectively connected to a controller 300, and the controller 300 adjusts the first detecting element 100 according to the distance between the first detecting element 100 and the measured optical filter.
In another embodiment, the second detecting element 200 detects the distance between the first detecting element 100 and the measured optical filter, and the display reads and displays the distance value, so that the detecting person can manually adjust the first detecting element 100 according to the distance between the first detecting element 100 and the measured optical filter, thereby ensuring that the focus of the first detecting element 100 is located on the surface of the measured optical filter.
In some embodiments, under the condition that the filter to be detected has a certain warpage, the second detecting element 200 can detect the warpage information, so that the distance between the first detecting element 100 and the filter to be detected can be known, and the controller 300 controls the first detecting element 100 to focus according to the distance, thereby ensuring that the first detecting element 100 can detect a clear image. That is, when the filter under test protrudes in a direction close to the first detecting element 100, the controller 300 may control the first detecting element 100 to increase the distance to the surface of the filter under test; when the filter under test is recessed in a direction away from the first detecting element 100, the controller 300 may control the first detecting element 100 to reduce the distance to the surface of the filter under test, so as to ensure that the focus of the first detecting element 100 is always located on the surface of the filter under test.
In the embodiment of the present invention, the first detecting component 100 includes: a visual inspection device 110 and a first actuator 120 coupled to the visual inspection device 110; the controller 300 is connected to the first driving member 120 to adjust the distance between the vision inspection device 110 and the filter to be inspected.
Specifically, the first driving member 120 includes an electric slide rail, an electric lead screw, or an air cylinder, and the visual inspection device 110 includes an industrial camera or a video camera. The first driving member 120 can drive the visual detection device 110 to move back and forth along the longitudinal direction, so as to adjust the distance between the visual detection device 110 and the measured optical filter, so that the focus of the visual detection device 110 is located on the surface of the measured optical filter, and the visual detection device 110 can collect a clear image of the measured optical filter, thereby ensuring the detection accuracy. In addition, the visual detection device 110 can adopt a camera with 2000 ten thousand pixels and a magnification telecentric lens, wherein the size of a single pixel is 2 um-5 um, the size of three pixels is 6 um-15 um, the first detection component 100 has the detection capability of minimum 6um, the visual field of the camera is 13.1mm multiplied by 8.8mm, and a combination mode of double lenses and double light sources can be adopted for improving the detection efficiency. It should be noted that human eye detection often causes omission and is difficult to detect shallow imprints, and the adoption of the industrial camera not only can improve the detection efficiency, but also can solve the problem that shallow imprints cannot be detected.
Further, first detecting element 100 connects the display, can show the image of being surveyed the light filter through the display to the measurement personnel observe more clearly being surveyed the light filter, compare in flesh eye direct observation being surveyed the light filter, use first detecting element 100 to gather the image, and enlarge the demonstration by the display, can improve defect discernment degree, and then improve and detect the precision, avoid producing the problem of wrong detection and missed measure.
Further, the optical filter detection apparatus further includes a detection platform 400, and the detection platform 400 is provided with a bearing surface to bear the detected optical filter. In addition, a position clamping matched with the measured optical filter can be arranged on the detection platform 400, the position clamping comprises a limiting groove or a limiting bulge and the like, and the measured optical filter can be positioned on the detection platform 400 through the position clamping, so that the measured optical filter is prevented from being inclined or dislocated.
Further, the optical filter detection apparatus further includes a position adjustment assembly 500, wherein the position adjustment assembly 500 is connected to the detection platform 400 or the first detection assembly 100 to adjust a detection position of the first detection assembly 100 relative to the detected optical filter.
In some embodiments, the position adjusting assembly 500 employs an electric sliding table, the electric sliding table is connected to the detecting platform 400 or the first detecting assembly 100, and the position of the first detecting assembly 100 relative to the detecting platform 400 can be adjusted by the electric sliding table, so that the first detecting assembly 100 can detect each position on the detected optical filter one by one, thereby avoiding the problem of missing detection.
As shown in fig. 1, 2 and 3, the position adjustment assembly 500 includes a second driving member 510, and the second driving member 510 is connected to the inspection platform 400 or the first inspection assembly 100 to drive the first inspection assembly 100 to move back and forth along a first direction parallel to the supporting surface relative to the inspected optical filter.
Specifically, the second driving member 510 includes an electric screw or an air cylinder, a fixed end of the second driving member 510 is connected to the frame, a movable end of the second driving member 510 is connected to the detection platform 400 or the first detection assembly 100, and the first detection assembly 100 can move along a first direction relative to the detection platform 400 through the second driving member 510, so as to detect the detected optical filter mounted on the detection platform 400 and change the detection position along the first direction.
Further, the position adjustment assembly 500 further includes a third driving element 520, wherein the third driving element 520 is connected to the detection platform 400 or the first detection assembly 100 to drive the first detection assembly 100 to move back and forth along a second direction parallel to the bearing surface relative to the filter to be detected; the second direction has an angle with the first direction. The third driving member 520 includes an electric screw or an air cylinder, a fixed end of the third driving member 520 is connected to the frame, and a movable end of the third driving member 520 is connected to a fixed end of the second driving member 510. The included angle between the second direction and the first direction can be set to 90 degrees, and the second driving element 510 and the third driving element 520 drive the detection platform 400 or the first detection assembly 100 together, so that the first detection assembly 100 can move along the surface of the detected optical filter to change the detection position, the detected optical filter can be comprehensively detected, and missing detection and dead angles are avoided.
It should be noted that an operating handle or a button may be additionally provided to the optical filter detection device, the controller 300 is connected to the operating handle or the button, a motion instruction may be input through the operating handle or the button, and the controller 300 controls the position adjustment assembly 500 according to the motion instruction, so as to adjust the detection position. The controller 300 may adopt a PLC controller, and a motion trajectory is preset according to the shape of the filter to be detected, and the controller 300 controls the position adjustment assembly 500 according to the preset motion trajectory, thereby implementing the overall detection of the filter to be detected. In addition, the warping information of the filter to be detected can be displayed through the display, and an operator can control the first driving member 120 according to the warping information of the filter to be detected, so that the distance between the visual detection device 110 and the filter to be detected is adjusted, and the visual detection device 110 can detect a clear image of the filter to be detected.
As shown in fig. 1 and fig. 3, the detection platform 400 is provided with a through groove 401, and the detected optical filter covers the through groove 401 in a state that the detection platform 400 bears the detected optical filter; one side of the detection platform 400 departing from the first detection assembly 100 is provided with a first light source 600, and the first light source 600 is used for irradiating the filter to be detected.
Specifically, the first light source 600 may adopt a telecentric parallel light source, the first light source 600 penetrates through the through groove 401 to irradiate the bottom surface of the measured optical filter, and light transmits through the measured optical filter, so that the first detection assembly 100 can acquire a clearer image.
As shown in fig. 1 and 4, a second light source 700 is disposed between the inspection platform 400 and the first inspection assembly 100. The second light source 700 is surrounded to form a light-passing area 701, so that the second light source 700 is prevented from shielding the first detecting assembly 100. The second light source 700 illuminates the measured optical filter in a low-angle dark field manner, the plurality of light emitting devices of the second light source 700 are arranged at intervals around the circumference of the light passing region 701, light beams with annular cross sections can be generated, the light beams irradiate the measured optical filter arranged on the detection platform 400, the light passing region 701 is coaxial with the optical axis of the first detection assembly 100, and the annular light beams are coaxial with the optical axis of the first detection assembly 100, so that the uniform illumination of the image collected by the first detection assembly 100 can be ensured.
As shown in fig. 1 and 2, the filter detecting apparatus further includes: a marking device 800 and a marking driving device 900 connected to the marking device 800; the mark driving device 900 is used to drive the marking device 800 to mark defects on the filter under test.
Specifically, the marking device 800 includes a marker pen, and the marking driving device 900 employs an electric slide or an air cylinder. When the first detection assembly 100 detects that there is a defect on the surface of the measured optical filter, the controller 300 drives the measured optical filter to move through the position adjustment assembly 500, so that the position with the defect moves to the position below the marking device 800, and the marking driving device 900 drives the marking device 800 to descend, so as to mark a point at the defect position. In addition, when marking device 800 contacts the measured filter, position adjustment subassembly 500 can drive the measured filter and remove to make measured filter surface form the mark that has certain pattern, compare in artifical mark, can guarantee the homogeneity of mark better, and can distinguish the mark to defects such as point seal, fish tail, collapsing edge.
As shown in fig. 1 and 2, the filter detection method includes: detecting the distance between the first detection assembly 100 and the detected optical filter by adopting a second detection assembly 200; adjusting the first detection assembly 100 according to the distance between the first detection assembly 100 and the measured optical filter; the first detection assembly 100 is used to detect the defect information of the filter under test.
Specifically, the filter to be detected is placed on the detection platform 400, the position adjustment assembly 500 drives the detection platform 400 to move, and the filter to be detected is moved to the lower side of the second detection assembly 200, and the warp information of the filter to be detected is detected by the second detection assembly 200. The controller 300 selects 100 to 200 detection points in the preset detection area. For example, 150 detection points can be selected to obtain a corresponding number of detection pictures, and the focus information corresponding to each detection point is calculated according to the warping information of the detected optical filter. The focus information includes coordinates of the detection point when the detection point is detected, a distance between the first detection element 100 and the filter to be detected in a state where the first detection element 100 is focused on the detection point, and position coordinates of the first detection element 100. The controller 300 drives the detection platform 400 to move through the position adjustment assembly 500, moves the detected optical filter to the lower part of the first detection assembly 100, and enables the first detection assembly 100 to detect each detection point according to a preset track, and in the process, the controller 300 controls the first driving member 120 according to the focus information, so as to adjust the visual detection device 110 to focus on the surface of the detected optical filter, thereby ensuring that the visual detection device 110 can obtain a clear image. After the detection is finished, the position adjusting assembly 500 drives the detection platform 400 to move, the detected optical filter is moved to the position below the marking device 800, the marking driving device 900 drives the marking device 800, and the marking processing is carried out at the position with the defect. After marking, the position adjustment assembly 500 drives the detection platform 400 to return to the initial position, and the detection step can be repeated by replacing another filter to be detected.
Further, the detecting the defect information of the filter under test by using the first detecting assembly 100 includes: acquiring an image; extracting an effective detection area of the image; extracting defects from the effective detection area; and judging the defect type.
In the step of acquiring images, the first detection assembly 100 acquires one image at each detection point, wherein each image has a visual field of 13.1mm multiplied by 8.8mm, and the overlapping size of adjacent images is 0.1-0.3 mm, so that the images can cover the detection area.
In the step of extracting the effective detection area of the image, the effective area of the image is extracted by adopting an image binarization segmentation method, the whole image presents a black and white effect, namely, the image is subjected to binarization processing by a gray value, for an image, when the segmentation threshold value of the foreground and the background is t, the ratio of foreground points to the image is w0, the average value is u0, the ratio of background points to the image is w1, and the average value is u1, then the average value of the gray value of the whole image is w0 × u0+ w1 × u1., and an object function g (t) w0 × (u0-u) is established2+w1×(u1-u)2And g (t) is an inter-class variance expression when the segmentation threshold is t. And when g (T) takes the global maximum value, the corresponding T is taken as the optimal threshold T, and the image is subjected to dichotomy processing by the optimal threshold T, so that the effective detection area can be clearly distinguished.
In the step of extracting the defects of the effective detection area, the dynamic threshold value is calculated by taking the pixels around the defects as a reference, and the defect image is extracted according to the dynamic threshold value, so that the interference of some irrelevant areas on the defect extraction is prevented. In order to eliminate interference information in the image, the image may be subjected to spatial filtering. And if the detection area meets the condition that g _ origin (a, b) -g _ mean (a, b) ≥ offset, the defect is considered to exist, wherein (a, b) is the coordinate value of the measured point in the image.
In the step of judging the defect type, dividing the defect into a large dot mark, a small dot mark, a long scratch and a short scratch, wherein the judgment standard of the large dot mark is 20-30 um in diameter or more than 30 um; the judgment standard of the small spot marks is 10-25 um in diameter; the judgment standard of the long scratch adopts the length of 1 mm-2 mm, or the length is more than 2 mm; the judgment standard of the short scratch adopts that the width is less than 20 um-30 um, and the length is 1 mm-2 mm or less than 1 mm. The diameter of the minimum circumscribed circle of the defect is adopted as the basis for judging the size of the defect, and the calculation method of the minimum circumscribed circle comprises the following steps: extracting coordinates of each vertex of the defect area, and performing polygon fitting; selecting any point as a reference point g _ base; calculating other points and the reference pointThe distance of (d); selecting a maximum distance point to calculate the minimum circumscribed circle outer diameter r and the circle center coordinate; calculating the distance Ri between other points and the center of the circumscribed circle, and extracting the maximum value Rmax; if Rmax>And r, constructing a triangle, and calculating the minimum circumscribed circle diameter d and the coordinates (x, y) of the circle center of the triangle. The polygon fitting is to obtain the vertex coordinates of the region by a dynamic threshold segmentation method, obtain a polygon region by fitting, and construct the vertex coordinates of the triangle as (x)1,y1)，(x2,y2)，(x3,y3) Then, from the equation of a circle, one can obtain:
if r is eliminated, a calculation formula of the coordinates of the center of the triangle circumscribed circle can be obtained:
and (5) eliminating r to obtain a circumscribed circle diameter formula:
the method for detecting the optical filter further comprises the step of judging whether the defect is positioned on the front side or the back side of the measured optical filter according to the definition of a defect image, wherein the method for judging the definition of the defect adopts the method of extracting the variance of the area where the defect is positioned and counting the entropy of the area where the defect is positioned, and the evaluation function of the variance adopts D (f) ∑y∑x|f(x,y)-u|2The evaluation function of entropy adopts:
i is a gray value in the range of 0-255 rel [ i ]]The probability of occurrence of the gray value i is represented. If both the variance and the entropy are smaller than the preset values, the definition of the defect image is judged to be low, and therefore the defect can be inferred to be positioned on the side, away from the first detection assembly 100, of the detected optical filter; if any one of the variance and the entropy is larger than the preset value, the definition of the defect image is judged to be high, and the defect is judged to be located on one side of the detected optical filter facing the first detection assembly 100.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. An optical filter inspection apparatus, comprising: a first detection assembly (100) and a second detection assembly (200);
the first detection assembly (100) is used for detecting the defect information of the filter to be detected;
the second detection assembly (200) is used for detecting the distance between the first detection assembly (100) and the filter to be detected;
the filter detection apparatus is configured to adjust the first detection assembly (100) in dependence on the distance of the first detection assembly (100) from the filter under test.
2. The filter testing apparatus according to claim 1, further comprising a testing platform (400), wherein the testing platform (400) is provided with a bearing surface for bearing the tested filter.
3. The filter testing apparatus of claim 2, further comprising a position adjustment assembly (500), wherein the position adjustment assembly (500) is connected to the testing platform (400) or the first testing assembly (100) to adjust the testing position of the first testing assembly (100) relative to the tested filter.
4. The filter testing apparatus of claim 3, wherein the position adjustment assembly (500) comprises a second driving member (510), the second driving member (510) is connected to the testing platform (400) or the first testing assembly (100) to drive the first testing assembly (100) to move back and forth along a first direction parallel to the bearing surface relative to the tested filter.
5. The filter testing apparatus according to claim 4, wherein the position adjustment assembly (500) further comprises a third driving member (520), the third driving member (520) is connected to the testing platform (400) or the first testing assembly (100) for driving the first testing assembly (100) to move reciprocally with respect to the tested filter along a second direction parallel to the bearing surface;
the second direction has an included angle with the first direction.
6. The filter testing apparatus according to claim 2, wherein the testing platform (400) is provided with a through slot (401), and the tested filter covers the through slot (401) in a state that the testing platform (400) bears the tested filter;
one side of the detection platform (400) departing from the first detection assembly (100) is provided with a first light source (600), and the first light source (600) is used for irradiating the detected optical filter.
7. The filter testing apparatus of claim 2, wherein a second light source (700) is provided between the testing platform (400) and the first testing assembly (100).
8. The filter detection apparatus according to claim 1, wherein the first detection assembly (100) comprises: a visual detection device (110) and a first driving member (120) connected with the visual detection device (110);
the first driving member (120) is connected with a controller (300), and the first driving member (120) is used for adjusting the distance between the visual detection device (110) and the filter to be detected.
9. The filter detection apparatus according to any of claims 1 to 8, wherein the second detection assembly (200) comprises a distance measuring sensor.
10. The filter detection apparatus according to any one of claims 1 to 8, further comprising: a marking device (800) and a marking drive device (900) connected to the marking device (800);
the marking driving device (900) is used for driving the marking device (800) to mark defects on the measured optical filter.
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